$fontColor:white; //变量
// 字体大小(加粗)
@mixin FontSize($x){  //混合宏
    font-size: $x;
    font-weight: bold;
    font-family: 微软雅黑;
}
// 字体大小(不加粗)
@mixin FontOnly($x){
    font-size: $x;
    font-family: 宋体;
}
//字体全家桶
@mixin Font($x,$y){
    font-size: $x;
    font-family: 微软雅黑;
    color:$y;    
}
// 宽高背景
@mixin SizeBack($x,$y,$z){
    width:$x;
    height:$y;
    background:$z;
}
//单纯的宽高
@mixin Size($x,$y){
    width:$x;
    height:$y;
}
// 菜单flex
@mixin FlexMenu(){
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
}
//居于两侧
@mixin FlexSpace(){
    display: flex;
    justify-content: space-between;
    align-items: center;
}
// 单纯的padding
@mixin Pd($x...){
    padding:$x;
}
// margin左右;
@mixin Mlt($x,$y){
    margin-left:$x;
    margin-top:$y;
}
//margin  padding
@mixin MP($x,$y){
    margin:$x;
    padding:$y;
}